27 citations · 172 across the 15 of their papers we have counts for
15 papers
Ultrafast Spectroscopy of Dirac Semimetal Cd3As2 under Pressure
Vikas Arora, D. V. S. Muthu, R Sankar +1
Topological properties of a three-dimensional Dirac semimetal Cd3As2, protected by crystal rotation and time-reversal symmetry, can be tuned with the application of pressure. Ultra…
Strong coupling of lattice and orbital excitations in quantum magnet CaCrO: Anomalous temperature dependence of Raman phonons
Srishti Pal, Arnab Seth, Anzar Ali +4
We report low-temperature Raman signatures of the Heisenberg quantum magnet CaCrO, showing clear anomalies in phonon mode frequencies and linewidths below 1…
Pressure-induced superconductivity in weak topological insulator BiSe
Pallavi Malavi, Arpita Paul, Achintya Bera +6
Quasi-two-dimensional layered BiSe, a natural super-lattice with Bi2Se3-Bi2-Bi2Se3 units, has recently been predicted to be a dual topological insulator, simultaneously weak topolo…
Pressure tuning of structure, magnetic frustration and carrier conduction in Kitaev spin liquid candidate CuIrO: X-ray, Raman, magnetic susceptibility, resistivity and first-principles analysis
Srishti Pal, Pallavi Malavi, Arijit Sinha +8
The layered honeycomb lattice iridate CuIrO is the closest realization of the Kitaev quantum spin liquid, primarily due to the enhanced interlayer separation and nearly ide…
Raman fingerprints of fractionalized Majorana excitations in honeycomb iridate AgLiIrO
Srishti Pal, Vinod Kumar, Debendra Prasad Panda +4
We report low-temperature (down to 5 K) Raman signatures of the recently discovered intercalated honeycomb magnet AgLiIrO, a putative Kitaev quantum spin liquid (…
Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine
Susmita Bhattacharya
This work, demonstrate enhanced valley contrasting spin-momentum locked chiral states at van der Waal interface of chiral L-cysteine and mono-atomically thin MoS2 placed at Si/SiO2…
Raman and first-principles study of the pressure induced Mott-insulator to metal transition in bulk FePS
Subhadip Das, Shashank Chaturvedi, Debashis Tripathy +6
Recently discovered class of 2D materials based on transition metal phosphorous trichalcogenides exhibit antiferromagnetic ground state, with potential applications in spintronics.…
Doping controlled Fano resonance in bilayer 1T-ReS: Raman experiments and first-principles theoretical analysis
Subhadip Das, Suchitra Prasad, Biswanath Chakraborty +6
In the bilayer ReS channel of a field-effect transistor (FET), we demonstrate using Raman spectroscopy that electron doping (n) results in softening of frequency and broade…
Role of spin-phonon and electron-phonon interactions in phonon renormalization of (EuBi)IrO across the metal-insulator phase transition: Temperature-dependent Raman and X-ray studies
Anoop Thomas, Prachi Telang, Kshiti Mishra +5
We report temperature-dependent Raman scattering and X-ray diffraction studies of pyrochlore iridates, (EuBi)IrO, for x=0, 0.02, 0.035, 0.05 and 0.1. The te…
Probing signatures of fractionalization in candidate quantum spin liquid Cu2IrO3 via anomalous Raman scattering
Srishti Pal, Arnab Seth, Piyush Sakrikar +5
Long-range entanglement in quantum spin liquids (QSLs) lead to novel low energy excitations with fractionalised quantum numbers and (in 2D) statistics. Experimental detection and m…
Tuning the structure of Skyrmion lattice system Cu2OSeO3 under pressure
Srishti Pal, Pallavi Malavi, Shashank Chaturvedi +5
The insulating ferrimagnet Cu2OSeO3 shows a rich variety of phases such as skyrmion lattice and helical magnetism controlled by interplay of different exchange interactions which c…
Plasmon-induced efficient hot carrier generation in graphene on gold ultrathin film with periodic array of holes: Ultrafast pump-probe spectroscopy
Gyan Prakash, Rajesh Kumar Srivastava, Satyendra Nath Gupta +1
Using ultrafast pump-probe reflectivity with 3.1 eV pump and coherent white light probe (1.1 to 2.6 eV), we show that graphene on gold nanostructures exhibits a strong coupling to…
Spin liquid like Raman signatures in hyperkagome iridate NaIrO
Satyendra Nath Gupta, P. V. Sriluckshmy, Ashiwini Balodhi +5
Combining Raman scattering measurements with mean field calculations of the Raman response we show that Kitaev-like magnetic exchange is dominant in the hyperkagome iridate NaI…
Raman Signatures of Strong Kitaev Exchange Correlations in (NaLi)IrO : Experiments and Theory
Satyendra Nath Gupta, P. V. Sriluckshmy, Kavita Mehlawat +7
Inelastic light scattering studies on single crystals of (NaLi)IrO ( and ) show a polarization independent broad band at ~2750 cm$^{-1…
Phonon Anomalies, Orbital-Ordering and Electronic Raman Scattering in iron-pnictide Ca(Fe0.97Co0.03)2As2: Temperature-dependent Raman Study
Pradeep Kumar, D. V. S. Muthu, L. Harnagea +3
We report inelastic light scattering studies on Ca(Fe0.97Co0.03)2As2 in a wide spectral range of 120-5200 cm-1 from 5K to 300K, covering the tetragonal to orthorhombic structural t…